In the v14 grid, after setting header row components (like filters) there is no way to get the component after the fact (like clearing it or getting its value).

A workaround is to store them in a local map that will eventually go out of sync or override the Grids default column factory, extend the default column and add:

`

public class MyColumn<T> extends Column<T>{
        private Component headerComponent;

        @Override
	protected void setHeaderComponent(Component component) {
		super.setHeaderComponent(component);
		headerComponent = component;
	}

	public Component getHeaderComponent() {
		return headerComponent;
	}

}`

would be nice to have this in the public API just like we had in the V8 Grid.

Tested with Vaadin 14.0.1